tree swallows

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gray fox
Posts: 114
Joined: Thu Feb 04, 2016 8:13 am
Location: Tyrone, PA

We have a sreh. Could a hole like that be made for tree swallows. I want too protect the ts from house sparrows. I know a bluebird couldnt get in .Has anybody tried it?
Louise Chambers
Site Admin
Posts: 6204
Joined: Tue Nov 04, 2003 1:07 pm
Location: Corpus Christi, TX

I doubt it would work - house sparrows are smaller than martins and tree swallows, so how would you keep them out, while still letting swallows in? SREHS work at keeping starlings out of martin compartments/gourds, most of the time, because starling has bigger circumference at breast than martin does. Don't we all wish there was a way to exclude house sparrows!
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